The answer has<span> to </span>do<span> with trophic </span>levels. ... The organisms that eat the producersare<span> the primary </span>consumers<span>. ... Therefore, the </span>energy<span> transfer from one trophic </span>level<span> to the </span>next<span>, </span>up<span> the</span>food chain<span>, </span>is<span> like a ... but </span>they<span> typically succumb to disease, hunger, the </span>effects<span> of aging, or some combination of them....</span>
